package top.pengdong.pictureShare.common.utils;

import com.alibaba.fastjson.JSONObject;

import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * @description: 获取ip地址
 * @projectName: pictureShare
 * @see: top.pengdong.pictureShare.common.utils
 * @author: pc
 * @createTime: 2022/5/1 14:28
 * @version: 1.0
 */
public class IPAddress {

	/**
	 * 获取ip
	 * @param request
	 * @return
	 */
	public static String getIpAddr(HttpServletRequest request) {
		String ipAddress = null;
		try {
			ipAddress = request.getHeader("x-forwarded-for");
			if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
				ipAddress = request.getHeader("Proxy-Client-IP");
			}
			if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
				ipAddress = request.getHeader("WL-Proxy-Client-IP");
			}
			if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
				ipAddress = request.getRemoteAddr();
				if (ipAddress.equals("127.0.0.1")) {
					// 根据网卡取本机配置的IP
					InetAddress inet = null;
					try {
						inet = InetAddress.getLocalHost();
					} catch (UnknownHostException e) {
						e.printStackTrace();
					}
					ipAddress = inet.getHostAddress();
				}
			}
			// 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
			if (ipAddress != null && ipAddress.length() > 15) {
				// "***.***.***.***".length()
				// = 15
				if (ipAddress.indexOf(",") > 0) {
					ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
				}
			}
		} catch (Exception e) {
			ipAddress="";
		}
		return ipAddress;
	}
}
